EP 0855598 A3 19990804 - Monitoring arrangement with monitoring switches
Title (en)
Monitoring arrangement with monitoring switches
Title (de)
Überwachungseinrichtung mit Überwachungsschaltern
Title (fr)
Dispositif de surveillance avec interrupteurs de sruveillance
Publication
Application
Priority
DE 19702009 A 19970122
Abstract (en)
[origin: JPH10213291A] PROBLEM TO BE SOLVED: To provide a monitor system for detecting the opened or closed state of a protective cover for a machine or the like. SOLUTION: A monitor system comprises at least one group of monitor switches 1' and 1" each connected to a current or voltage source 2 and an evaluation unit 4. The evaluation unit 4 associated with the monitor switch 1" compares t,he potential differences by output of the monitor switches 1" and 1' time-recorded by a clock generator 5 to check the opened or closed state of a protective cover.
IPC 1-7
IPC 8 full level
F16P 3/08 (2006.01); H01H 47/00 (2006.01)
CPC (source: EP US)
F16P 3/08 (2013.01 - EP US); H01H 47/002 (2013.01 - EP US)
Citation (search report)
- [DA] DE 3241492 A1 19840524 - BOEHM RAINER KG DR [DE]
- [A] DE 2809596 A1 19790920 - MERK GMBH TELEFONBAU FRIED
- [A] DE 4409541 A1 19950921 - LEON HELMA CHRISTINA [DE]
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
DE 19702009 A1 19980723; DE 19702009 C2 19990909; BR 9800427 A 20010703; CN 1201148 A 19981209; EP 0855598 A2 19980729; EP 0855598 A3 19990804; JP H10213291 A 19980811; US 5894274 A 19990413
DOCDB simple family (application)
DE 19702009 A 19970122; BR 9800427 A 19980121; CN 98104256 A 19980116; EP 98100035 A 19980103; JP 561598 A 19980114; US 1008698 A 19980121